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http://hdl.handle.net/10261/35984
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Somoza, Luis | - |
dc.contributor.author | Martínez-Frías, J. | - |
dc.contributor.author | Smellie, J. L. | - |
dc.contributor.author | Rey, Jorge | - |
dc.contributor.author | Maestro González, Adolfo | - |
dc.date.accessioned | 2011-05-24T12:31:10Z | - |
dc.date.available | 2011-05-24T12:31:10Z | - |
dc.date.issued | 2004-01-15 | - |
dc.identifier.citation | Marine Geology 20381-2): 119-140 (2004) | es_ES |
dc.identifier.issn | 0025-3227 | - |
dc.identifier.uri | http://hdl.handle.net/10261/35984 | - |
dc.description | 22 páginas, 9 figuras, 3 tablas. | es_ES |
dc.description.abstract | The results of a combined geophysical and geochemical research programme on Deception Island, an active volcano at 62°43′S, 60°57′W in Bransfield Strait (Antarctica), are presented. Ultrahigh-resolution acoustic data obtained with a TOPAS (TOpographic PArameter Sonar) system and multibeam bathymetry (Simrad EM1000) allow a detailed analysis of submarine vents in Port Foster, the submerged caldera of Deception Island. The data show three different types of seafloor structures: low-relief mounds, high-relief mounds (‘wasp nest’-like) and spire-like structures. We interpret these structures as products of sediment volcanism and seeps caused by heating and boiling of pore fluids in gas-charged sediments, and related to recent short-lived volcanic events, possibly those that occurred in 1967, 1969 and 1970. In addition, subsurface vertical disturbed zones, formed by increased amplitude and phase-inverse reflectors beneath the mounds, suggest the presence of fluidised and brecciated sediments within hydrofracture systems. A key finding of this study is that there appears to be a close relationship between the submarine mounds detected by our ultrahigh-resolution seismic study, geochemical haloes, fault-pathways and present-day thermal anomalies in surface waters. We suggest that seafloor hydrofracture systems and subsurface pipes can be re-used as fluid migration pathways, resulting in hydrothermal seeps and vents on the seafloor, possibly up to decades after coeval volcanic eruptions. | es_ES |
dc.description.sponsorship | The research was supported by the Project ‘Hidrotermalismo submarino en la Isla de Decepción’ (ref. ANT1998-1557-E/HESP) administered by the Spanish Programme for Antarctic Research. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | closedAccess | es_ES |
dc.subject | Hydrothermal vents | es_ES |
dc.subject | Submarine volcanoes | es_ES |
dc.subject | Geophysical surveys | es_ES |
dc.subject | Geochemical investigations | es_ES |
dc.subject | Antarctica | es_ES |
dc.title | Evidence for hydrothermal venting and sediment volcanism discharged after recent short-lived volcanic eruptions at Deception Island, Bransfield Strait, Antarctica | es_ES |
dc.type | artículo | es_ES |
dc.identifier.doi | 10.1016/S0025-3227(03)00285-8 | - |
dc.description.peerreviewed | Peer reviewed | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1016/S0025-3227(03)00285-8 | es_ES |
dc.contributor.funder | Comisión Interministerial de Ciencia y Tecnología, CICYT (España) | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100007273 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.fulltext | No Fulltext | - |
item.openairetype | artículo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.languageiso639-1 | en | - |
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